Fasting means that your glucose levels are seriously lo when you haven't eaten in quite a while ...like 8-12 hours of not eating you bet shaky, fainting, dizzy etc.
Reactive/post-prandial means that you bottom out FAST after a rich meal, for me it means a hefty meal w/dessert. Same symptoms. The dessert thing is now a rare and super treat for me.
From most I've read the hypo-g usually is clumped in w/lo glucose levels in diabetics. But the issue is not a lack of insulin, it's a case of TOO much all at once that then causes the rest of your system to crashe suddenly. Similar, but not identical to Diabetes. Some chemistry differences[we all KNOW how strong I am on the chemistry!]. Other siblings are also hypoglycemic and not one of us shows signs of pre-diabetes or actual diabetes. Thus my confusions.

On to more homework m'dear....'Winking out' is a good term for it all tho!
Hugs and good stuff - j